SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D - DECEMBER 1982 - REVISED AUGUST 2003 D Wide Operating Voltage Range of 2 V to 6 V High-Current Outputs Drive Up To 15 LSTTL Loads 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers D D D D Low Power Consumption, 80-A Max ICC Typical tpd = 11 ns 6-mA Output Drive at 5 V Low Input Current of 1 A Max SN54HC244 . . . J OR W PACKAGE SN74HC244 . . . DB, DW, N, NS, OR PW PACKAGE (TOP VIEW) 20 2 19 3 18 4 17 5 6 16 15 7 14 8 13 9 12 10 11 2Y4 1A1 1OE VCC 1 VCC 2OE 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 1A2 2Y3 1A3 2Y2 1A4 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 1Y1 2A4 1Y2 2A3 1Y3 2Y1 GND 2A1 1Y4 2A2 1OE 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND SN54HC244 . . . FK PACKAGE (TOP VIEW) 2OE D D description/ordering information These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The 'HC244 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low, the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. ORDERING INFORMATION PACKAGE TA PDIP - N SN74HC244N Tube of 25 SN74HC244DW Reel of 2000 SN74HC244DWR SOP - NS Reel of 2000 SN74HC244NSR HC244 SSOP - DB Reel of 2000 SN74HC244DBR HC244 Tube of 70 SN74HC244PW Reel of 2000 SN74HC244PWR Reel of 250 SN74HC244PWT CDIP - J Tube of 20 SNJ54HC244J SNJ54HC244J CFP - W Tube of 85 SNJ54HC244W SNJ54HC244W LCCC - FK Tube of 55 SNJ54HC244FK TSSOP - PW -55C 125C -55 C to 125 C TOP-SIDE MARKING Tube of 20 SOIC - DW -40 C to 85 -40C 85C C ORDERABLE PART NUMBER SN74HC244N HC244 HC244 SNJ54HC244FK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D - DECEMBER 1982 - REVISED AUGUST 2003 FUNCTION TABLE (each buffer/driver) INPUTS OE A OUTPUT Y L H H L L L H X Z logic diagram (positive logic) 1OE 1A1 1A2 1A3 1A4 1 2OE 2 18 4 16 6 14 8 12 1Y1 2A1 1Y2 2A2 1Y3 2A3 1Y4 2A4 19 11 9 13 7 15 5 17 3 2Y1 2Y2 2Y3 2Y4 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 mA Package thermal impedance, JA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70C/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D - DECEMBER 1982 - REVISED AUGUST 2003 recommended operating conditions (see Note 3) SN54HC244 VCC VIH Supply voltage VCC = 2 V VCC = 4.5 V High-level input voltage VCC = 6 V VCC = 2 V VIL VI VO t/v t/ v Low-level input voltage NOM MAX 2 5 6 MAX 2 5 6 3.15 3.15 4.2 4.2 0 UNIT V V 0.5 0.5 1.35 1.35 1.8 1.8 VCC VCC VCC = 2 V VCC = 4.5 V Input transition rise/fall time NOM 1.5 0 Output voltage MIN 1.5 VCC = 4.5 V VCC = 6 V Input voltage SN74HC244 MIN 0 VCC VCC 0 1000 1000 500 500 V V V ns VCC = 6 V 400 400 TA Operating free-air temperature -55 125 -40 85 C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VOH VOL TEST CONDITIONS VI = VCC or 0, SN54HC244 MIN MAX SN74HC244 MIN MAX UNIT 2V 1.9 1.998 1.9 1.9 4.4 4.499 4.4 4.4 6V 5.9 5.999 5.9 5.9 IOH = -6 mA IOH = -7.8 mA 4.5 V 3.98 4.3 3.7 3.84 6V 5.48 5.8 5.2 5.34 2V 0.002 0.1 0.1 0.1 IOL = 20 A A 4.5 V 0.001 0.1 0.1 0.1 6V 0.001 0.1 0.1 0.1 4.5 V 0.17 0.26 0.4 0.33 6V 0.15 0.26 0.4 0.33 6V 0.1 100 1000 1000 nA 6V 0.01 0.5 10 5 A 8 160 80 A 10 10 10 pF IOL = 6 mA IOL = 7.8 mA ICC Ci TA = 25C TYP MAX 4.5 V VI = VIH or VIL VI = VCC or 0 VO = VCC or 0, MIN IOH = -20 A A VI = VIH or VIL II IOZ VCC VI = VIH or VIL IO = 0 6V 2 V to 6 V POST OFFICE BOX 655303 3 * DALLAS, TEXAS 75265 V V 3 SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D - DECEMBER 1982 - REVISED AUGUST 2003 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) TA = 25C TYP MAX SN54HC244 SN74HC244 PARAMETER FROM (INPUT) TO (OUTPUT) VCC 2V 40 115 170 145 tpd A Y 4.5 V 13 23 34 29 6V 11 20 29 25 ten OE tdis OE tt Y Y Y MIN MIN MAX MIN MAX 2V 75 150 225 190 4.5 V 15 30 45 38 6V 13 26 38 32 2V 75 150 225 190 4.5 V 15 30 45 38 6V 13 26 38 32 2V 28 60 90 75 4.5 V 8 12 18 15 6V 6 10 15 13 UNIT ns ns ns ns switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) TA = 25C MIN TYP MAX SN54HC244 SN74HC244 PARAMETER FROM (INPUT) TO (OUTPUT) VCC 2V 56 165 245 210 tpd A Y 4.5 V 18 33 49 42 ten tt OE Y Y MIN MAX MIN MAX 6V 15 28 42 35 2V 100 200 300 250 4.5 V 20 40 60 50 6V 17 34 51 43 2V 45 210 315 265 4.5 V 17 42 63 53 6V 13 36 53 45 UNIT ns ns ns operating characteristics, TA = 25C PARAMETER Cpd 4 TEST CONDITIONS Power dissipation capacitance per buffer/driver POST OFFICE BOX 655303 No load * DALLAS, TEXAS 75265 TYP 35 UNIT pF SN54HC244, SN74HC244 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS SCLS130D - DECEMBER 1982 - REVISED AUGUST 2003 PARAMETER MEASUREMENT INFORMATION VCC PARAMETER Test Point From Output Under Test tPZH S1 ten RL CL (see Note A) 1 k tPZL tPHZ tdis S2 RL tPLZ tpd or tt 1 k -- LOAD CIRCUIT CL S1 S2 50 pF or 150 pF Open Closed Closed Open Open Closed Closed Open Open Open 50 pF 50 pF or 150 pF VCC Input 50% 50% 0V tPLH In-Phase Output 50% 10% tPHL 90% VOH 50% 10% V OL tf 90% tr tPHL Out-of-Phase Output 90% tPLH 50% 10% 50% 10% 90% VOH VOL tf tr VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES Output Control (Low-Level Enabling) VCC 50% 50% 0V tPZL Output Waveform 1 (See Note B) tPLZ 10% tPZH Input 50% 10% 90% VCC 90% 50% 10% 0 V tr Output Waveform 2 (See Note B) VCC VCC 50% VOL tPHZ 50% 90% VOH 0 V tf VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS NOTES: A. CL includes probe and test-fixture capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, ZO = 50 , tr = 6 ns, tf = 6 ns. D. The outputs are measured one at a time with one input transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 PACKAGE OPTION ADDENDUM www.ti.com 26-Sep-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type 5962-8409601VRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC 5962-8409601VSA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC Package Drawing Pins Package Eco Plan (2) Qty Lead/Ball Finish MSL Peak Temp (3) 84096012A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC 8409601RA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC 8409601SA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC JM38510/65705B2A ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC JM38510/65705BRA ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC JM38510/65705BSA ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC 1 SN54HC244J ACTIVE CDIP J 20 TBD Call TI Level-NC-NC-NC SN74HC244ADBLE OBSOLETE SSOP DB 20 TBD Call TI Call TI SN74HC244APWLE OBSOLETE TSSOP PW 20 TBD Call TI Call TI SN74HC244DBLE OBSOLETE SSOP DB 20 Call TI Call TI SN74HC244DBR ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244DBRE4 ACTIVE SSOP DB 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244DW ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244DWE4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244DWG4 ACTIVE SOIC DW 20 25 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244DWR ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244DWRE4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244DWRG4 ACTIVE SOIC DW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244N ACTIVE PDIP N 20 CU NIPDAU Level-NC-NC-NC TBD 20 Pb-Free (RoHS) SN74HC244N3 OBSOLETE PDIP N 20 TBD Call TI SN74HC244NE4 ACTIVE PDIP N 20 20 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC SN74HC244NSG4 ACTIVE SO NS 20 40 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244NSR ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244NSRE4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244NSRG4 ACTIVE SO NS 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244PW ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244PWE4 ACTIVE TSSOP PW 20 70 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244PWLE OBSOLETE TSSOP PW 20 TBD Call TI SN74HC244PWR ACTIVE TSSOP PW 20 2000 Green (RoHS & Addendum-Page 1 CU NIPDAU Call TI Call TI Level-1-260C-UNLIM PACKAGE OPTION ADDENDUM www.ti.com 26-Sep-2005 Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty SN74HC244PWRE4 ACTIVE TSSOP PW 20 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244PWT ACTIVE TSSOP PW 20 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SN74HC244PWTE4 ACTIVE TSSOP PW 20 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM SNJ54HC244FK ACTIVE LCCC FK 20 1 TBD Call TI Level-NC-NC-NC SNJ54HC244J ACTIVE CDIP J 20 1 TBD Call TI Level-NC-NC-NC SNJ54HC244W ACTIVE CFP W 20 1 TBD Call TI Level-NC-NC-NC Lead/Ball Finish MSL Peak Temp (3) no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 MECHANICAL DATA MLCC006B - OCTOBER 1996 FK (S-CQCC-N**) LEADLESS CERAMIC CHIP CARRIER 28 TERMINAL SHOWN 18 17 16 15 14 13 NO. OF TERMINALS ** 12 19 11 20 10 A B MIN MAX MIN MAX 20 0.342 (8,69) 0.358 (9,09) 0.307 (7,80) 0.358 (9,09) 28 0.442 (11,23) 0.458 (11,63) 0.406 (10,31) 0.458 (11,63) 21 9 22 8 44 0.640 (16,26) 0.660 (16,76) 0.495 (12,58) 0.560 (14,22) 23 7 52 0.739 (18,78) 0.761 (19,32) 0.495 (12,58) 0.560 (14,22) 24 6 68 0.938 (23,83) 0.962 (24,43) 0.850 (21,6) 0.858 (21,8) 84 1.141 (28,99) 1.165 (29,59) 1.047 (26,6) 1.063 (27,0) B SQ A SQ 25 5 26 27 28 1 2 3 4 0.080 (2,03) 0.064 (1,63) 0.020 (0,51) 0.010 (0,25) 0.020 (0,51) 0.010 (0,25) 0.055 (1,40) 0.045 (1,14) 0.045 (1,14) 0.035 (0,89) 0.045 (1,14) 0.035 (0,89) 0.028 (0,71) 0.022 (0,54) 0.050 (1,27) 4040140 / D 10/96 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. This package can be hermetically sealed with a metal lid. The terminals are gold plated. Falls within JEDEC MS-004 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 MECHANICAL DATA MSSO002E - JANUARY 1995 - REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0-8 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-150 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 MECHANICAL DATA MTSS001C - JANUARY 1995 - REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0- 8 A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-153 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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D) (sn74hc244.pdf, 534 KB) 13 Aug 2003 Download SN54HC244 SN74HC244 SN74HC244-EP Voltage Nodes(V) 6, 5, 2 6, 4.5, 2 6, 4.5, 2 Vcc range(V) 2.0 to 6.0 2.0 to 6.0 2.0 to 6.0 Logic True True True Input Level CMOS CMOS CMOS Output Level CMOS CMOS CMOS -7.8/7.8 -7.8/7.8 Output Drive(mA) No. of Gates No. of Outputs 10 8 8 8 tpd max(ns) 29 34 Static Current 0.08 0.16 Samples Samples Samples Inventory Inventory Inventory Product Information Features Save this to your personal library Wide Operating Voltage Range of 2 V to 6 V High-C urrent Outputs Drive Up To 15 LSTTL Loads 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers Low Power C onsumption, 80-A Max ICC Typical tpd = 11 ns 6-mA Output Drive at 5 V Low Input C urrent of 1 A Max Description These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The 'HC 244 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE)\ inputs. When OE\ is low, the device passes noninverted data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state. Refine Your Selection - Logic: Non-Inverting Bu and Drivers Support - KnowledgeBase Contact Technical Supp TI Cross Reference Training Part Marking Lookup Part Number Nomencla Pricing/Packaging/CAD Design Tools/Samples Price Temp (oC) Packaging Budget Price ($US) | QTY Industry Standard (TI Pkg) | Pins Top Side Marking CAD Design Tools Standard Pack Quantity Footprints Samples Device Status SN74HC244ADBLE OBSOLETE -40 to 85 SSOP (DB) | 20 View Not Available SN74HC244APWLE OBSOLETE -40 to 85 TSSOP (PW) | 20 View Not Available SN74HC244DBLE OBSOLETE -40 to 85 SSOP (DB) | 20 View Not Available SN74HC244DBR ACTIVE -40 to 85 0.33 | 1KU SSOP (DB) | 20 View 2000 Contact TI Distributor or Sales Office SN74HC244DBRE4 ACTIVE -40 to 85 0.33 | 1KU SSOP (DB) | 20 View 2000 Request Free Samples SN74HC244DW ACTIVE -40 to 85 0.33 | 1KU SOIC (DW) | 20 View 25 Purchase Samples SN74HC244DWE4 ACTIVE -40 to 85 0.33 | 1KU SOIC (DW) | 20 View 25 Purchase Samples SN74HC244DWG4 ACTIVE -40 to 85 0.37 | 1KU SOIC (DW) | 20 View 25 Purchase Samples SN74HC244DWR ACTIVE -40 to 85 0.33 | 1KU SOIC (DW) | 20 View 2000 Contact TI Distributor or Sales Office SN74HC244DWRE4 ACTIVE -40 to 85 0.33 | 1KU SOIC (DW) | 20 View 2000 Request Free Samples SN74HC244DWRG4 ACTIVE -40 to 85 0.37 | 1KU SOIC (DW) | 20 View 2000 Purchase Samples SN74HC244N ACTIVE -40 to 85 0.36 | 1KU PDIP (N) | 20 View 20 Contact TI Distributor or Sales Office SN74HC244N3 OBSOLETE -40 to 85 PDIP (N) | 20 View SN74HC244NE4 ACTIVE -40 to 85 0.36 | 1KU PDIP (N) | 20 View 20 Request Free Samples SN74HC244NSG4 ACTIVE 0.37 | 1KU SO (NS) | 20 View 40 Purchase Samples SN74HC244NSR ACTIVE -40 to 85 0.33 | 1KU SO (NS) | 20 View 2000 Contact TI Distributor or Sales Office SN74HC244NSRE4 ACTIVE -40 to 85 0.33 | 1KU SO (NS) | 20 View 2000 Purchase Samples SN74HC244NSRG4 ACTIVE -40 to 85 0.37 | 1KU SO (NS) | 20 View 2000 Purchase Samples SN74HC244PW ACTIVE -40 to 85 0.33 | 1KU TSSOP (PW) | 20 View 70 Purchase Samples SN74HC244PWE4 ACTIVE -40 to 85 0.33 | 1KU TSSOP (PW) | 20 View 70 Purchase Samples SN74HC244PWLE OBSOLETE -40 to 85 TSSOP (PW) | 20 View SN74HC244PWR ACTIVE -40 to 85 0.33 | 1KU TSSOP (PW) | 20 View 2000 Contact TI Distributor or Sales Office SN74HC244PWRE4 ACTIVE -40 to 85 0.33 | 1KU TSSOP (PW) | 20 View 2000 Request Free Samples SN74HC244PWT ACTIVE -40 to 85 0.66 | 1KU TSSOP (PW) | 20 View 250 Purchase Samples SN74HC244PWTE4 ACTIVE -40 to 85 0.66 | 1KU TSSOP (PW) | 20 View 250 Purchase Samples Not Available Not Available Inventory TI Inventory Status SN74HC244DBR Reported Distributor Inventory As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time As of 9:11 AM GMT, 29 Nov 2005 Region Company Samples In Purchase Stock View all Distributors C hoose a Region 0* 165 | 22 Dec 10 Weeks >10k | 29 Dec Americas Arrow >1k Europe 680 As of 9:11 AM GMT, 29 Nov 2005 SN74HC244DBRE4 AvnetSILICA As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time Region 0* 165 | 22 Dec 10 Weeks None Reported View Distributors Company In Purchase Stock >10k | 29 Dec As of 9:11 AM GMT, 29 Nov 2005 SN74HC244DW As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* >10k | 30 Jan 9 Weeks Americas Arrow >1k Avnet >1k Newark InOne 458 Arrow Northern Europe >1k Arrow Southern Europe >1k AvnetSILICA >1k Region Europe Company In Purchase Stock EBV >1k Elektronik As of 9:11 AM GMT, 29 Nov 2005 SN74HC244DWE4 As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* >10k | 30 Jan 9 Weeks None Reported View Distributors Region As of 9:11 AM GMT, 29 Nov 2005 SN74HC244DWG4 Company As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* >10k | 30 Jan 9 Weeks None Reported View Distributors Region As of 9:11 AM GMT, 29 Nov 2005 SN74HC244DWR In Purchase Stock Company In Purchase Stock As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* >10k | 19 Dec 8 Weeks Americas Avnet Region Europe Company In Purchase Stock >1k DigiKey >1k Abacus Polar >1k Arrow Northern Europe >1k AvnetSILICA >1k EBV >1k Elektronik As of 9:11 AM GMT, 29 Nov 2005 SN74HC244DWRE4 >1k Spoerle >1k As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* >10k | 19 Dec 8 Weeks None Reported View Distributors Region As of 9:11 AM GMT, 29 Nov 2005 SN74HC244DWRG4 SN74HC244N Rutronik Company As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* >10k | 30 Jan 9 Weeks None Reported View Distributors As of 9:11 AM GMT, 29 Nov 2005 In Purchase Stock Region Company In Purchase Stock As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* >10k | 5 Jan 10 Weeks Region Company In Purchase Stock Americas Arrow >1k Avnet >1k DigiKey >1k Newark InOne >1k Abacus Polar >1k Arrow Northern Europe >1k Arrow Southern Europe >1k AvnetSILICA >1k Europe EBV >1k Elektronik As of 9:11 AM GMT, 29 Nov 2005 SN74HC244NE4 As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time Region 0* >10k | 5 Jan 10 Weeks None Reported View Distributors As of 9:11 AM GMT, 29 Nov 2005 SN74HC244NSG4 Company In Purchase Stock As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* 165 | 19 Dec 8 Weeks None Reported View Distributors Region Company In Purchase Stock >10k | 3 Jan As of 9:11 AM GMT, 29 Nov 2005 SN74HC244NSR In Stock In Progress QTY | Date 2000* 165 | 16 Dec Lead Time As of 9:11 AM GMT, 29 Nov 2005 Region Company 8 Weeks Americas DigiKey In Purchase Stock >1k >10k | 30 Dec As of 9:11 AM GMT, 29 Nov 2005 SN74HC244NSRE4 As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* 165 | 16 Dec 8 Weeks None Reported View Distributors Region Company In Purchase Stock >10k | 30 Dec As of 9:11 AM GMT, 29 Nov 2005 SN74HC244NSRG4 As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time 0* 165 | 19 Dec 8 Weeks None Reported View Distributors Region Company In Purchase Stock >10k | 3 Jan As of 9:11 AM GMT, 29 Nov 2005 SN74HC244PW As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time Region 0* 630 | 12 Dec 12 Weeks None Reported View Distributors Company In Purchase Stock >10k | 3 Apr As of 9:11 AM GMT, 29 Nov 2005 SN74HC244PWE4 As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time Region 0* 630 | 12 Dec 12 Weeks None Reported View Distributors >10k | 3 Apr Company In Purchase Stock As of 9:11 AM GMT, 29 Nov 2005 SN74HC244PWR In Stock In Progress QTY | Date Lead Time 0* >10k | 3 Apr 16 Weeks As of 9:11 AM GMT, 29 Nov 2005 Region >1k Europe Arrow Southern Europe >1k Rutronik >1k As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time Region 0* >10k | 3 Apr 16 Weeks None Reported View Distributors As of 9:11 AM GMT, 29 Nov 2005 SN74HC244PWT Company In Purchase Stock As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time Region 0* >10k | 3 Apr 16 Weeks None Reported View Distributors As of 9:11 AM GMT, 29 Nov 2005 SN74HC244PWTE4 In Purchase Stock Americas DigiKey As of 9:11 AM GMT, 29 Nov 2005 SN74HC244PWRE4 Company Company In Purchase Stock As of 9:11 AM GMT, 29 Nov 2005 In Stock In Progress QTY | Date Lead Time Region 0* >10k | 3 Apr 16 Weeks None Reported View Distributors Company * Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor, including those listed above, for real time stock information. In Purchase Stock ** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information. Quality & Lead (Pb)-Free Data Product Content Device Eco Plan* SN74HC244DBR SN74HC244DBRE4 Lead/Ball Finish MTBF/FIT Rate MSL Rating/Peak Reflow Details Details Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244DW Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244DWE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244DWG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244DWR Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244DWRE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244DWRG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244N Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC View View SN74HC244NE4 Pb-Free (RoHS) CU NIPDAU Level-NC-NC-NC View View SN74HC244NSG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244NSR Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244NSRE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244NSRG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244PW Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244PWE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244PWR Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244PWRE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244PWT Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View SN74HC244PWTE4 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM View View * The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please click on the Product C ontent Details "View" link in the table above for the latest availability information and additional product content details. If the information you are requesting is not available online at this time, contact one of our Product Information C enters regarding the availability of this information. Technical Documents Datasheets SN54HC244, SN74HC244 (Rev . D) (sn74hc244.pdf, 534 KB) 13 Aug 2003 Download Keep track of what's new Application Notes Simultaneous-Switching Performance of TI Logic Dev ices (Rev . B) (szza038b.htm, 9 KB) 23 Feb 2005 Abstract Semiconductor Packing Material Electrostatic Discharge (ESD) Protection (szza047.htm, 9 KB) 08 Jul 2004 Abstract Shelf-Life Ev aluation of Lead-F ree Component F inishes (szza046.htm, 9 KB) 24 May 2004 Abstract Understanding and Interpreting Standard-Logic Data Sheets (Rev . B) (szza036b.htm, 8 KB) 28 May 2003 Abstract TI IBIS F ile Creation, Validation, and Distribution Processes (szza034.htm, 9 KB) 29 Aug 2002 Abstract Selecting the Right Texas Instruments Signal Switch (szza030.htm, 9 KB) 07 Sep 2001 Abstract Implications of Slow or F loating CMOS Inputs (Rev . C) (scba004c.htm, 9 KB) 01 Feb 1998 Abstract CMOS Power Consumption and CPD Calculation (Rev . B) (scaa035b.htm, 9 KB) 01 Jun 1997 Abstract Designing With Logic (Rev . C) (sdya009c.htm, 9 KB) 01 Jun 1997 Abstract Liv e Insertion (sdya012.htm, 9 KB) 01 Oct 1996 Abstract Input and Output Characteristics of Digital Integrated Circuits (sdya010.htm, 9 KB) 01 Oct 1996 Abstract SN54/74HCT CMOS Logic F amily Applications and Restrictions (scla011.htm, 9 KB) 01 May 1996 Abstract Using High Speed CMOS and Adv anced CMOS in Systems With Multiple Vcc (scla008.htm, 9 KB) 01 Apr 1996 Abstract View Application Notes for NON-INVERTING BUFFERS AND DRIVERS User Guides Signal Switch Data Book (Rev . A) (scdd003a.pdf, 19732 KB) 14 Nov 2003 Download LOGIC Pocket Data Book (scyd013.pdf, 4835 KB) 05 Dec 2002 Download Simulation Models IBIS Model IBIS Model of SN74HC244 (schm004.ibs, 169 KB) 09 Aug 2004 ibis / zip More Literature Logic Selection Guide 2005 (Rev . X) (sdyu001x.pdf, 6909 KB) 15 Mar 2005 Download Military Semiconductors Selection Guide 2004-2005 (Rev . D) (sgyc003d.pdf, 964 KB) 10 Aug 2004 Download SN74HC4851/HC4852 Product Clip (Rev . B) (scyb019b.pdf, 501 KB) 11 May 2004 Download Logic Cross-Reference (Rev . A) (scyb017a.pdf, 2938 KB) 07 Oct 2003 Download View More Literature for NON-INVERTING BUFFERS AND DRIVERS Products | Applications | Design Support | Buy | C ontact Us | TI Worldwide | my.TI Login | All Searches | C ompany Info | Press Releases | RSS | Site Map (c) Copyright 1995-2005 Texas Instruments Incorporated. All rights reserved. Trademarks | Privacy Policy | Terms of Use